Nut-lock.



M. L. SHINN da W. H. KIDD. NUT LQGK. APPLICATION FILED APR.17, 1911.

@09, 8U l .Patented lov. 28, 1911.

ralrtlirr nommen.

Application ilei April it?,

Specification of Letters traitent.

To oil w/iom "it may concern:

Be it known that we, MARTIN lli. Sinnen and VVALTnrg H'. lni1 ,'both citizens ot' the nitied States. residing,r at Los Angeles, county otlios Angeles, State of California. have invented new and useful Qlniprovenients in Nut-Looks, of' which the following is aspeeilieation.

This invention relates to improvements in our joint invention 'in nu-t looks for which We have applied tor Letters Patent on No veinber 26th, i909, the application bearing Serial No. 529,913; and the improvements over our former invention will become ap parent troni the following. ln our It'ornier invention We utilized a. nut having ratchet teeth which acted in combination with a spring tooth or tongue on a Washer which is provided with nieann to prevent it@` rotation relative to the bolt. This Spring tooth projects through an aperturoin a second Washer plaed interniediate the spring 'usher and the nut. This aperture has an (werhang'ingr wall7 so that by turningr the intermediate asher the springn tongue can be t'orced under the overhangringr wall and out ot i-.xnyejageinent with the ratchet teeth ofthe nut. lt the intermediate Washer iveie rotated any considerable distaneea the Springl tongue would be t'oreed down llaty on the :spring 'asherz and inany such operations would tongue so that it.\\ould not rise to engage nient with the ratchet teeth in the nut. l"or this reaeon. in our old eonntriu'tion. We have provided stops toiprevent any exeesrotation ot the intermediate Washer. ln our present. invention the n'ieans tor preventing` detorination ole the apring tongue is providerl in an eiitirely ditlerent manner. beingI embodied in a Circular groove provided completely around the inner periphery ot the intt-n'niediate vasher, this groove being sulliciently deep to allow the spring' tongue to projet" thereinto and not be del'ornied when 'pi ed out oil engage nient with the ratchet teeth in the nut. rlhe intermediate washer is sullirienlly thick to provide for this annular .groove and t'or Snllieient material over the groove lto hold the spring tongue away troni the nut. These feature: will be better understood troni the following specification and the acoonnpanyingI drawings. in whichw Figure l is a view showing our iinproveifl permanently detorin the nut loris: as it appears in une, the device loeing shown in elevation. .llt1 ig'. 2 is a plan oiE the de llligjl is a plan oi the spring wasl'ier. l Llis an edge view of the saine. llig. 5 is an upper plan ot' the intermediate washer. Fig. 6 a lower plan of the saine. Alig. T a section of the intermediate Washer taken as indicated by line 7`-7 of ltig. t3. Fig. tl is a bottom plan ot the nut. lliig. l) i5 a longitudinal central section of the sanne. i

ln the drawings 5 designates a bolt of4 any character and having" a longitudinal way or slotI 6 eut therein, this longitudinal slot beingr ei'igaged by an inwardly 'and longitudinally projecting lug 7 on 'the inner periphery ot' sjorinlgg Washer in'. ling; l is turned no as to project longitudinally along elotI in order to obtainV a better engagement with the slot. It spring' tongue 9 is Stamped out ot spring vwasl'ier 8. the tongue projecting ont troni the washer somewhat in the fashion illustrated in Fig'. 4l; (The showing' in Fig. #lis reversed troni the position ,o'l the. Spring,r tongue and washer in lilo'. l: that. is, the tongue projecto troni the right hand eide o'tfthe washer in Fig'. l and toward the'nut.) Directly over spring" 'asher o iS plaeed intermediate ivanher l0.

llhis Washer is provided with an annular nroove il extending; around itt; inner periphery and lon .its face adjacent .spring fasher F. tiroove 'll extends partially through Washer lll. and the bottoni wall of the ,groove is apertured at. l2 to allo7 the end ol `tongue l) to project upwardly there through. tdjaeent aperture Yl2 the Wall of 'the groove ie beveled, as shown at i3. lnterrnediz'ite washer lll vis placed over spring' washer 5.1 in the rehitive positions Shown in l'ig's. 3 and 5; Spring' tongue. l) then Yprojects up under beveled Wall 13 and out througli aperture 172-. lunnediately over inteiinediate Washer l() tho nut l5 is placed. Nut l5 is ot' ordinary struoture with the exception of being provided with ratchet' teeth lli on its fatte which bears against washer l0. lt will be seen that the, ratchet. teeth pass directly over aperture 1L) and over the end of tongue l).

ll'hen the parte are all placed in the position .shown in Figi. l.. nut. 'l5 beingw screwed down tightly on the. two washers, tonfrue l) will engage with the ratchety teeth andpren vent the nut troni being unserewed. (ln

till

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this case the nutturns to the right to tighten and to the left to loosen.) If-it is desired to release the vnut it is only necessary to turn the intermediate Washer 10 in a right handed direction, beveled Wall 13 'being forced over the tongue `9 and the tongue thus Withdrawn from engagement With the ratchet Ateeth on the nut. The spring tongue is thus forced down into groove 11; but the groove allows it to stand suiiiciently high above sp'ring Washer 8 that it -is not deformed by being pressed down. And it will be seen that intermediate Washer 10 can be turned as muchv as desired Without deforming the tongue.

The natural tendency of nut 15 is to turn to the left, and any frictional eifeets it may have on intermediate Washer 10 is to turn lit to the left. Turning Washer 10 to the left cannot possibly release tongue 9. It anything, the tongue Will be pressed upwardly into more secure engagement With the nut by reason of the edge of aperture 12 moving in under the spring tongue. In this manner We have provided that it is impossible for the nut to be removed unless intermediate Washer 10 is turned to the right, and such an'operation will ordinarily be only accomplished by manual eorts. le have further, and specifically toJ-his invention, provided that the spring tongue cannot be injured by any amountof rotation of the intermediate washer; and WeA haverthus provided a. nut lock which is at once sure in its action and incapable of being injured by ignorant manipulation.

Having described our claim;

1. A nut lock, comprising in combinat-ion a bolt having a longitudinal slot in its surface, anut having ratchet teeth on its under `surface, a. spring Washer surrounding the bolt and having means for engaging said longitudinal slot, a spring tongue projecting from the Washer and adapted to engage the ratchet teeth on the nut, and an intermediate Washer between the spring washer and the nut, the intermediate washer having an aperture through which the tongue projects, and also having an annular groove in its invention, we

surface adjacent the spring Washer and directly over the spring tongue.

2. A nut lock, comprising in combination a bolt, a nut for the bolt, the nut having teeth on its under surface, a spring Washer, means for preventing the rotation of the spring washer on the bolt, a tongue on the spring Washer and projecting into engagement with the nut teeth, and an intermediate Washer having an aperture therein through which the tongue passes and having an annular groove in 'its face adjacent the spring Washer and overthe tongue.' ,y

3. A nut lock, comprising in combination a bolt, a nut for the bolt, a spring tongue projecting into engagement With the nut to prevent its rotation in one direction,- means to prevent the rotation of the spring tongue with reference to the bolt, and a rotatable member adjacent the nut and having an aperture through Which the spring tongue projects to engagement with the nut, the member also being provided with an annular,V

groove on its face away from the nut and adjacent on the tongue. g

t. A nut lock, comprising in combination, a screw threaded bolt having a longitudinal slot in its periphery, a nut engagingthe screw threads and having ratchet teeth on its under face, a spring Washer surrounding the bolt and having a lug extending'- into said longitudinal slot, a spring tongue formed integrally with the Washer' and project-ing into engagement With the ratchet teeth on the nut, and a Washer intermediate the spring Washer and the nut and having` an aperture through which the tongue passes to engage said ratchetteeth and also having an annular groove in its face adjacent the spring Washer and directly over the tongue.

In Witness that We claim'the foregoing We 'Y have hereunto `subscribed our names this 8th day of April, 1911.

M. L. SHINN. WALTER H. KIDD.

lVitnesses:

JAMES T. BARKELEW, Emvoon H. BARKELEW. 

